CLASS X. ORDER I. 183 



and divided into three segments or lobes at the end, the other 

 two are equal, lanceolate, and obtuse. Stamens unequal, curved, 

 purple, with small anthers. Germ pubescent. Style purple, 

 longer than the stamens. — Low grounds. — Maiden, Cambridge. 

 — May. In the Notch of the White mountains, June. 



190. LEDUM. 

 Ledum latifolium. Labrador Tea. 



Leaves linear-oblong ; folded under at the margin, 

 woolly underneath ; stamens as long as the petals. 



A low shrub of our northern mountains and bogs. The 

 youngest part of the stem is green and woolly. Leaves on short 

 woolly petioles, lanceolate, strongly revolute at the sides, smooth 

 above, covered with thick reddish wool underneath. Flowers in 

 terminal corymbs with slender peduncles. Bractes obovate con- 

 cave, covered with shining resinous dots, as are the peduncles 

 and germ. Calyx minute with five obtuse teeth. Petals five, 

 oblong, obtuse, white. Stamens from five to ten, as long as the 

 petals. Germ oval ; style as long as the stamens, a little de- 

 clined. — On the Monadnock, White mountains, &c. — July. 



The leaves are astringent, and are said to have been used as a 

 substitute for tea. 



191. CLETHRA. 

 Clethra alnifolia. Ij. Alder leaved Clethra. 



Leaves obovate, serrate, pubescent underneath ; 

 racemes simple, bracted. Willd. 



A tall, elegant, white flowering shrub. Leaves about three 

 inches long, and from one to two broad, inversely ovate, serrate, 

 downy underneath in one variety, glabrous in another. Flowers 

 in long racemes or loose spikes with downy stalks. Bractes 

 linear-subulate. Calyx greenish white ; petals roundish oblong ; 

 stigma trifid. — Grows in low soils, Cambridgeport. — July, August. 



192. PYROLA. 



§ Subgenus . Stamens ascending, style decliiiedy 



stisTTna annular. 



